/**
 * #      1803
 * 名称   统计异或值在范围内的数对有多少
 * 链接   https://leetcode-cn.com/problems/count-pairs-with-xor-in-a-range
 * 题解   [42](https://leetcode-cn.com/problems/count-pairs-with-xor-in-a-range/solution)
 * 通过率 37.8%
 * 难道   困难
 */

